re PR fortran/39670 (dollar sign in entities is not recognized when it is first symbol)

2009-04-08  Daniel Franke  <franke.daniel@gmail.com>

       PR fortran/39670
       * invoke.texi (fdollar-ok): Clarify limitations.

From-SVN: r145764

gcc/fortran/ChangeLog

+2009-04-08  Daniel Franke  <franke.daniel@gmail.com>
+
+	PR fortran/39670
+	* invoke.texi (fdollar-ok): Clarify limitations.
+
 2009-04-08  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/38863

gcc/fortran/invoke.texi

@@ -256,7 +256,9 @@ the default width of @code{DOUBLE PRECISION} to 16 bytes if possible, unless
 @cindex $
 @cindex symbol names
 @cindex character set
-Allow @samp{$} as a valid character in a symbol name.
+Allow @samp{$} as a valid non-first character in a symbol name. Symbols 
+that start with @samp{$} are rejected since it is unclear which rules to
+apply to implicit typing as different vedors implement different rules.
 
 @item -fbackslash
 @opindex @code{backslash}